Pratt, 35, made good on a promise to Panzer TV in July, when he explained why he stole his costume from the set.

"If it was a big enough movie, to where it would mean something to a kid who's sick in the hospital for Peter Quill or Star-Lord to come visit them, I'll do that," he said. "I think that's awesome, man."

The proud dad recently told PEOPLE about spending time in the hospital with his own little boy, Jack, who was born nine weeks premature in August 2012 and was in intensive care for a month.

"It restored my faith in God, not that it needed to be restored, but it really redefined it," he said. "The baby was so beautiful to us, and I look back at the photos of him and it must have been jarring for other people to come in and see him, but to us he was so beautiful and perfect."